BE careful whom you chastise in front of Richie Rich‘s crew. Potential backers of the designer’s new reality show got an inside look at the catty world of socialite fashion while seated at the Heatherette show at Bryant Park on Tuesday. One tent hopper told us, “All these execs were around, and Bijou Phillips was sitting next to Tinsley Mortimer knocking Nicky Hilton‘s line. She called it ‘complete garbage.’ Then there were people running around talking about how nobody could find an outfit that would fit Kim Kardashian‘s ass. Plus, no one clapped when she walked the runway.” The snippy comments didn’t end there, according to our spy. “When Jenna Jameson walked in the show all these people in the front row started cracking up, and saying that she looked just like [fellow runway walker] Amanda Lepore‘s daughter. And all these execs from Logo, A&E, MTV, Style Net . . . they were hearing all of it.” Future viewers better start sharpening their catwalk claws.